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87300250381 = 530316462427
BaseRepresentation
bin101000101001110000…
…0000001101100001101
322100100002211012212201
41101103200001230031
52412242331003011
6104034415201501
76210244612261
oct1212340015415
9270302735781
1087300250381
1134029796263
1214b04816291
1383036c57b6
1443225320a1
15240e345cc1
hex1453801b0d

87300250381 has 4 divisors (see below), whose sum is σ = 87316718112. Its totient is φ = 87283782652.

The previous prime is 87300250339. The next prime is 87300250397. The reversal of 87300250381 is 18305200378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18305200378 = 29152600189.

It is a cyclic number.

It is not a de Polignac number, because 87300250381 - 213 = 87300242189 is a prime.

It is a super-2 number, since 2×873002503812 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87300250381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87300254381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8225911 + ... + 8236516.

It is an arithmetic number, because the mean of its divisors is an integer number (21829179528).

Almost surely, 287300250381 is an apocalyptic number.

It is an amenable number.

87300250381 is a deficient number, since it is larger than the sum of its proper divisors (16467731).

87300250381 is a wasteful number, since it uses less digits than its factorization.

87300250381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16467730.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 87300250381 in words is "eighty-seven billion, three hundred million, two hundred fifty thousand, three hundred eighty-one".

Divisors: 1 5303 16462427 87300250381